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RE: SAP values in Doc CD posted 06/30/2004
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Because the odd numbered SAPs are responses.  Responses don't exist in the
destination SAP field.  They are SSAPs only.

HTH,

 
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, CISSP,
JNCIP, et al.
IPExpert CCIE Program Manager
IPExpert Sr. Technical Instructor
swm@xxxxxxxxxx/smorris@xxxxxxxxxxxx
http://www.ipexpert.net
 
 

-----Original Message-----
From: nobody@xxxxxxxxxxxxxx [mailto:nobody@xxxxxxxxxxxxxx] On Behalf Of
Yasser Aly
Sent: Tuesday, June 29, 2004 8:22 PM
To: 'Ty'; 'Kenneth Wygand'; 'Jason Westlund'; ccielab@xxxxxxxxxxxxxx
Subject: RE: SAP values in Doc CD

Hi Ty,

  I don't get why the mask would be 0x0001 instead of 0x0101 ?
If we are interested in matching 0x04 & 0x05 then wouldn't we need to have
the mask as 0x0101 Same applies for NetBios: Need to match F0 & F1 then the
mask would be 0x0101.

If I am getting something wrong here then kindly correct me.

Thanks for your feedback.
Yasser 

-----Original Message-----
From: Ty [mailto:tycampbell@xxxxxxxxxxx]
Sent: Wednesday, June 30, 2004 3:17 AM
To: Yasser Aly; 'Kenneth Wygand'; 'Jason Westlund'; ccielab@xxxxxxxxxxxxxx
Subject: Re: SAP values in Doc CD

The more specific values for SNA are 0x0404 0x0001   you have 0x0101 for the
second part, which you may want to watch for on the lab

NetBIOS is 0xF0F0 0x0001    no 0xF0F0 0x0101

>From the DOC CD

It is under bridging...then Source Route Bridging

Just do a search for 0xF0F0 and it will come up

DOC CD Portion
The preceding statement requires three access lists to be configured:

  a.. An access list that passes a frame if it is a NetBIOS frame (SAP =
0xF0F0)
  b.. An access list that passes a frame if it is an SNA frame (SAP =
0x0404)
  c.. An access list that passes a MAC address of 0110.2222.3333 The
following configuration allows for all these conditions:

! Access list 201 passes NetBIOS frames (command or response) access-list
201 permit 0xF0F0 0x0001 !
access-list 202 permit 0x0404 0x0001 ! Permits SNA frames (command or
response)
access-list 202 permit 0x0004 0x0001 ! Permits SNA Explorers with NULL DSAP

HTH!   :-)
!
----- Original Message -----
From: "Yasser Aly" <yasser.aly@xxxxxxxxxxxxx>
To: "'Kenneth Wygand'" <KWygand@xxxxxxxxxxxxxxxx>; "'Jason Westlund'"
<jason.westlund@xxxxxxxxx>; <ccielab@xxxxxxxxxxxxxx>
Sent: Tuesday, June 29, 2004 6:41 PM
Subject: RE: SAP values in Doc CD


> Thanx all for your feedback.
>
> So to summarize the most common that needs to be known are as follows:
>
> SNA:
> ====
>
> 0x0000 mask 0x0D0D [ This range includes 0x04, 05, 08, 08, & 0C ]
>
> To be more specific
>
> 0x0404 mask 0x0101 [ A key component in DLSW topologies ]
>
> NetBios:
> ========
>
> 0xF0F0 mask 0x0101  [ Matches F0 & F1 ]
>
> IPX:
> ====
>
> 0xE0E0 mask 0x0101
>
>
> To allow all SAPs:
> ==================
>  0x0000 mask 0xFFFF
>
> Will that be all or there is others to be added to this small list ?
>
> Yasser
>
> -----Original Message-----
> From: Kenneth Wygand [mailto:KWygand@xxxxxxxxxxxxxxxx]
> Sent: Wednesday, June 30, 2004 2:30 AM
> To: Jason Westlund; Yasser Aly; ccielab@xxxxxxxxxxxxxx
> Subject: RE: SAP values in Doc CD
>
> Jason,
>
> Are you sure ipx is e0e0 - 0000 and not e0e0 - 0101.
>
> I always though the reply traffic came back with the last bit flipped, 
> so
I
> would think IPX would be treated the same as NetBIOS.
>
> Thoughts?
>
> Kenneth E. Wygand
> Systems Engineer, Project Services
> CISSP #37102, CCNP, CCDP, ACSP, Cisco IPT Design Specialist, MCP, CNA,
> Network+, A+
> Custom Computer Specialists, Inc.
> "The only unattainable goal is the one not attempted."
> -Anonymous
>
> -----Original Message-----
> From: Jason Westlund [mailto:jason.westlund@xxxxxxxxx]
> Sent: Tuesday, June 29, 2004 7:20 PM
> To: Kenneth Wygand; Yasser Aly; ccielab@xxxxxxxxxxxxxx
> Subject: RE: SAP values in Doc CD
>
> You should also know IPX e0e0 - 0000 and ANY 0000 - ffff.
>
> -Jason
> CCIE #13261
>
> -----Original Message-----
> From: nobody@xxxxxxxxxxxxxx [mailto:nobody@xxxxxxxxxxxxxx] On Behalf 
> Of Kenneth Wygand
> Sent: Tuesday, June 29, 2004 4:09 PM
> To: Yasser Aly; ccielab@xxxxxxxxxxxxxx
> Subject: RE: SAP values in Doc CD
>
> SAP addresses are as follows:
>
> SNA:
> Address: 0x0000  --  Mask: 0x0D0D
>
> NetBIOS:
> Address: 0xF0F0  --  Mask: 0x0101
>
> I don't think there are any other important ones that you need to know.
> Does anyone disagree?
>
> Thanks!
> Ken
>
> -----Original Message-----
> From: nobody@xxxxxxxxxxxxxx on behalf of Yasser Aly
> Sent: Tue 6/29/2004 6:37 PM
> To: ccielab@xxxxxxxxxxxxxx
> Cc:
> Subject: SAP values in Doc CD
>
>
>
> Hello,
>
>   I wonder where to find the SAP values in the DOC CD, also where to 
> find examples regarding lsap access-lists in the CD.
>
> Thanks,
> Yasser
>
>
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